JP3681607B2 - Disk drive device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk drive device having a function of reproducing information from an information recording / reproducing medium such as a CD-R.
[0002]
[Prior art]
In recent years, CD family variations based on the CDDA (Compact Disc Digital Audio) system have increased, and CD-R has attracted attention.
[0003]
This CD-R is provided with a recording layer formed of an organic dye, and has a feature that information can be additionally recorded (write once) only once. For this reason, it is attracting attention as an information recording / reproducing medium suitable for a user to record desired image data, music data, computer program data, etc., and store it for a long period of time.
[0004]
The CD-R is considered compatible with the CD family, and when data is written by a CD-R recording device and finalized, the information is reproduced using a CD player in the same manner as the CDDA. be able to.
[0005]
However, as described above, the CD-R has an advantage that information can be recorded, but there is a limitation that the information can be recorded only once. For example, after a user records a plurality of music data with a CD-R recording apparatus, Even if it is not necessary to reproduce the specific music data, it is not possible to erase the specific music data and overwrite the other music data.
[0006]
Therefore, as a CD-R recording device that can respond to such a user's request, in the above-described finalizing process, address information in which music data that does not need to be reproduced is recorded is recorded in a TOC (Table of Contents). Has been developed. According to this, when the finalized CD-R is reproduced by a CD player, the designated music data is set as the reproduction-prohibited target data, and reproduction is not performed, but only the music data desired by the user is reproduced. Therefore, improvement in operability and the like are achieved.
[0007]
For example, as schematically shown in FIG. 5, after the user has recorded three pieces of music data TNO (n) to TNO (n + 2), it is specified that the second music data TNO (n + 1) is not reproduced. When the above finalizing process is performed, an instruction (“" indicating that the next music is to be reproduced while the first music data TNO (n) is being reproduced by applying the CD-R after the finalizing process to the CD player. (Referred to as “track search”), the playback is continued by jumping from the address P1 in the middle of playback to the start address ADRn + 2 of the third music data TNO (n + 2).
[0008]
In other words, it is necessary to reproduce by jumping to the start address ADRn + 2 (start address where music data is actually recorded, not the start address of the inter-song (silence) portion in the figure) managed by the TOC. Since the second music data TNO (n + 1) having no sound is skipped and reproduction without interruption is performed, operability is improved.
[0009]
Further, in the CD-R recording apparatus, when a write error occurs during information recording, the address information in which data corresponding to the write error is recorded is recorded in the TOC, so that the CD player reproduces it. There is also known one having a function of setting data corresponding to a write error as reproduction prohibited data.
[0010]
For example, when the second music data TNO (n + 1) shown in FIG. 5 corresponds to a write error, the CD player completes the reproduction of the first music data TNO (n) and then the third music data TNO (n + 1). Playback continues from the start address ADRn + 2 of the music data TNO (n + 2). That is, the second music data TNO (n + 1) is automatically skipped, and the playback is performed following the start address ADRn + 2 where the third music data TNO (n + 1) is actually recorded. Therefore, continuous reproduction is performed to improve operability.
[0011]
[Problems to be solved by the invention]
By the way, in order to improve the operability for the user as described above, the CD player is provided with a function called manual search in addition to the track search described above.
[0012]
This manual search is not a function for switching the playback target in order for each music data like the track search, but a function for searching the playback start position desired by the user while playing the music data in fast-forward. is there.
[0013]
For example, as schematically shown in FIG. 6, when a user instructs manual search during reproduction of music data TNO (n + 2) and tries to search for a desired reproduction start position while performing so-called rewinding, a CD player The pick-up is reversed from the address Pa during playback to the direction indicated by the arrow (the direction of the lead-in area), and while the manual search is instructed, the music data is partially played back while the young number is It moves to the music data TNO (n + 1), TNO (n) side.
[0014]
Therefore, according to the manual search, the user can fast-rewind to a desired position with an operation feeling like an analog cassette tape, and can start reproduction from the rewind position.
[0015]
However, in the conventional manual search, data designated not to be reproduced by the user and reproduction prohibited data corresponding to a writing error (for example, the second music data TNO (n + 1) in FIG. 6) are also subject to the search. There was a problem of playing as.
[0016]
For this reason, it takes time to search for the playback start position desired by the user, and the interval between music (silence) where no music data is actually recorded is also subject to manual search. There were problems such as forcing unnecessary operations.
[0017]
The present invention has been made to overcome the above-described conventional problems, and an object of the present invention is to provide a disk drive device having a search function that can improve operability.
[0018]
In order to achieve the above object, claim 1 is provided. Pertaining to The present invention relates to a disk drive device having a manual search function, wherein information recorded on an information recording / reproducing medium is changed from information on the outer circumference side to information on the inner circumference side. Manual search instruction means for searching for a desired reproduction start position while partially reproducing toward the Detection means for detecting the front end position of information following the end position of the inter-music part included in the information based on read information of the pickup, and information recorded on the inner peripheral side across the inter-music part Search means for searching for the end position of, and when the detection means detects the front end position, Let the search means search for the end position, and continue the manual search from the end position. Control means, and the search means comprises The jump of the track existing on the information recording / reproducing medium performed by the pickup jumps to the outer peripheral side when the jumped position is within the information existing area recorded on the inner peripheral side, and the jump When the position is the inter-musical part, it is repeatedly performed while reducing the number of tracks to be jumped so that the jump to the inner peripheral side is performed, and the number of jumping tracks is the smallest and the inter-musical part to the inner peripheral side When jumping into the information existing area, the jump position is the end position. It is characterized by that.
[0019]
According to such a configuration, when a manual search is performed from information recorded on the outer peripheral side of the information recording / reproducing medium to information recorded on the inner peripheral side, the information between the outer peripheral side and the inner peripheral side is between If a search is performed up to the front end position of information on the outer circumference side, the search from the front end position to the end position of information on the inner circumference side is skipped, so that Do not search. Thus, a portion between songs unnecessary for the user during manual search is not searched, and only necessary information is continuously searched to provide excellent operability to the user.
[0020]
The invention according to claim 2 is a disk drive device having a manual search function, wherein information recorded on the information recording / reproducing medium is changed from information on the outer periphery side to information on the inner periphery side. Manual search instruction means for searching for a desired reproduction start position while partially reproducing toward the Detection means for detecting a front end position of information following the end position of information for which reproduction prohibition is specified included in the information based on read information of the pickup, and sandwiching the information for which reproduction prohibition is specified Search means for searching for the end position of the information recorded on the inner circumference side, and when the detection means detects the front end position, Let the search means search for the end position and continue the manual search from the end position. Control means, and the search means comprises The jump of the track existing on the information recording / reproducing medium performed by the pickup jumps to the outer peripheral side when the jumped position is within the information existing area recorded on the inner peripheral side, and the jump If the designated position is the information for which the reproduction prohibition is specified, it is repeated while reducing the number of tracks to be jumped so as to jump to the inner circumference side, and the number of jumping tracks is the minimum and the reproduction prohibition is performed. When jumping from the specified information to the existing area of information recorded on the inner circumference side, the jump position is set as the end position. It is characterized by that.
[0021]
According to such a configuration, when a manual search is performed from information recorded on the outer peripheral side of the information recording / reproducing medium to information recorded on the inner peripheral side, the information between the outer peripheral side and the inner peripheral side is between If there is information for which playback prohibition is specified, when the search is performed up to the front end position of the outer peripheral information, the search from the front end position to the end position of the inner peripheral information is skipped. The search for the information for which reproduction is prohibited is not performed. As a result, information that is designated as prohibition of playback unnecessary for the user during manual search is not subject to search, and only necessary information is continuously searched to provide excellent operability to the user. To do.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a disk drive apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the disk drive device of this embodiment, and FIGS. 2 and 3 are flowcharts for explaining the operation of the disk drive device of this embodiment.
[0023]
In FIG. 1, this disk drive apparatus has a function of reproducing a CD family disk 1 which is an information storage / reproduction medium, and a spindle motor 2 which rotates the disk 1 at a clamp position and optically reads information. A pickup 3 is provided.
[0024]
Furthermore, an RF amplifier 4 that amplifies a signal read by the pickup 3 and performs matrix processing, a servo circuit 5 that performs focus servo, tracking servo, and thread servo on the pickup 3 based on an output signal of the RF amplifier 4, and an EFM demodulator 7 Is provided with a speed control circuit 6 for controlling the rotational speed of the spindle motor 3 to a predetermined linear speed based on the demodulated data demodulated in (1).
[0025]
The EFM demodulator 7 demodulates the output signal (RF signal) from the RF amplifier 4 by EFM (Eight to Fourteen Modulation), and the CIRC demodulator 8 corrects the demodulated data by CIRC (Cross Interleaved Reed Solomon Code) code error correction. To output to the output circuit 9.
[0026]
The output circuit 9 converts the output data from the CIRC demodulator 8 into an analog signal Sout by the built-in D / A converter and outputs it, or outputs the output data from the CIRC demodulator 8 as the digital data Dout. To do.
[0027]
Further, a subcode demodulator 10 is provided which demodulates subcoding data from the demodulated data output from the EFM demodulator 7 and supplies the demodulated data to the system controller 11.
[0028]
The system controller 11 has a microprocessor (MPU), controls the operation of the entire disk drive device, and controls the later-described manual search based on the subcoding data from the subcode demodulator 10. .
[0029]
Further, the present disk drive device is provided with an operation unit 12 for a user to input a desired command to the system controller 11.
[0030]
In this disk drive device, the user inputs a desired command by operating the operation unit 12, but the disk playback device is attached to a microcomputer, and a SCSI (Small Computer System Interface) or The system controller 11 may control the operation of the entire disk drive device in accordance with a command supplied from the microcomputer via an interface such as EIDE (Enhanced IDE) or ATAPI (AT Attachment Packet Interface). .
[0031]
Next, the operation of the disk drive apparatus having such a configuration will be described based on the flowcharts of FIGS.
[0032]
In order to make the operation easy to understand, as shown in FIG. 4 as a specific example, a CD-R in which a user has recorded a plurality of music data in a program area and finalized is loaded as a disk 1 in this disk drive device. In the middle of reproducing the (n + 1) th music data TNO (n + 1), a fast search rewind is performed to the nth music data TNO (n) side by inputting a manual search start command from the operation unit 12. The case of performing will be described.
[0033]
As shown in FIG. 4, the head area of the (n + 1) th music data TNO (n + 1) is an inter-song (silence) portion NON, and the actual music data is stored in this inter-song (silence) portion NON. It shall be recorded continuously. Further, each music data is called a target song number (Track Number: TNO).
[0034]
For example, when the user issues a manual search start command when the pickup 3 moves to a certain address Pa in the middle of reproducing the target song number TNO (n + 1) in FIG. 4 described above, the tracking servo is canceled and the pickup is performed. 3 is moved in the radial direction of the disk 1 by a predetermined number of tracks, and then the pickup 3 is on-track servoed on the moved track, so that the recorded data is a predetermined number corresponding to one sector (98 frames) or relatively small. A manual search is performed by repeating the process of reproducing a number of sectors, releasing the tracking servo again, and moving the pickup 3 in the radial direction of the disk 1. That is, as indicated by a plurality of arrows X in FIG. 4, the manual search is performed by sequentially moving the pickup 3 in the radial direction.
[0035]
When the user continues the manual search in this way and the pickup 3 moves to the position of the start address Pb where the music data is actually recorded in the target music number TNO (n + 1) in FIG. 4, the music shown in FIG. The process during the end search is started.
[0036]
When the index data included in the P channel subcode output from the subcode demodulator 10 is “1”, the system controller 11 detects that the pickup 3 has reached the start address Pb. Then, the process of “searching for the end of music” shown in FIG. 2 is started.
[0037]
That is, when data is recorded on the CD-R by the CD-R recording apparatus and finalized, the silence data corresponding to the non-song portion (silence) portion NON in each target song number TNO is “0” for each sector. The index data "" is recorded as a P-channel subcode, or the index data is not recorded. In addition, “1” index data indicating the beginning of the music is recorded as a P-channel subcode in the head sector of the actual music data, and “2” index data is recorded in each sector of the music data that follows. Are recorded as P-channel subcodes.
[0038]
Therefore, as described above, when the index data included in the P channel subcode output from the subcode demodulator 10 is “1”, the system controller 11 causes the pickup 3 to reach the start address Pb. 2 is detected, and the process during the end of song search shown in FIG. 2 is started.
[0039]
In step S100, it is determined whether the pickup 3 is located at the last (end) address of the lead-out area LTNO of the disc 1.
[0040]
That is, the system controller 11 checks the absolute address (absolute time) of the data reproduced by the pickup 3 based on the subcode of the Q channel output from the subcode demodulator 10, and the absolute time is stored in the lead-out area LTNO. Judge whether it is the last address or not.
[0041]
If the absolute time is the last address (in the case of “Yes”), the process proceeds to step S102, where the absolute time of the lead-out is searched and the manual search process is terminated (step S104).
[0042]
That is, FIG. 4 shows a case where the user performs a manual search in order to perform fast forward rewind from the address Pa in the target music number TNO (n + 1) to the target music number TNO (n). If the user performs a manual search for fast forward in the forward direction from the address Pa in the target song number TNO (n + 1) and the pickup 3 reaches the last address in the lead-out area LTNO, the further The search process is not performed.
[0043]
Next, when the absolute time is not the last address of the lead-out area LTNO in the above step S100 (in the case of “No”), the process proceeds to step S106, and the pickup 3 is located in the program area of the disc 1. Judgment is made. That is, the system controller 11 checks the Q channel subcode output from the subcode demodulator 10, and if the absolute time corresponds to the program area, the process proceeds to step S108.
[0044]
If the Q channel subcode is not an absolute time indicating the program area (in the case of “No”), the process proceeds to step S112, and the pickup 3 is moved into the program area. That is, when the sub-code of the Q channel is not the absolute time of the program area, the pickup 3 is located in the lead-in area or the lead-out area. Move to the area and repeat the process from step S106.
[0045]
Next, in step S108, it is determined whether or not the pickup 3 is located at the target music number TNO (n) of the jump destination. That is, when the index data included in the P channel subcode output from the subcode demodulator 10 is “2”, the system controller 11 has the target music number TNO (n) to which the pickup 3 jumps. If it is not (if “No”), the process proceeds to step S114.
[0046]
Next, in step S110, the system controller 11 checks whether or not flag data FG indicating “locking at the end of music”, which will be described later, is set. If it is not “locking at the end of music” (in the case of “No”), The process proceeds to step S122, and when “end of song is locked” (in the case of “Yes”), the pickup 3 is the end of the target music number TNO (n) of the jump destination, that is, the target music number TNO ( n) It is determined that the actual music data is located at the end address (referred to as the end of song address), and the “end of song search” process is ended.
[0047]
When the user continues the manual search even after the “end of song search” process is completed, the pickup 3 is moved in the radial direction of the disc 1 continuously from the above end address of the target song number TNO (n). By moving, fast-forward rewinding is continuously performed.
[0048]
As described above, when all the determination results in steps S106, S108, and S110 are "Yes", the manual search is started from the address Pa of the target song number TNO (n + 1) shown in FIG. After the pickup 3 jumps from the data recording start address (that is, the music data front end address) Pb to the music end address of the target music number TNO (n), the target music number TNO (n) continues from the music end address. Manual search is performed. That is, by skipping the inter-song (silent) portion NON, only actual music data of the target song number TNO (n + 1) and the target song number TNO (n) are subjected to manual search.
[0049]
Next, a process when the determination result is “No” in steps S108 and S110, that is, a process for accurately moving the pickup 3 to the “song end address” of the target song number TNO (n) of the jump destination. Will be described.
[0050]
If it is determined in step S108 that the pickup 3 has not moved from the address Pb to the target music number TNO (n) of the jump destination, the process proceeds to step S114. For example, the inter-song (silence) portion NON shown in FIG. 4 is long, so that the pickup 3 is jumped to the target tune number TNO (n), but the jump position is the area of the inter-song (silence) portion NON. If it is within the range, “No” is determined in step S108, and the process proceeds to step S114.
[0051]
In step S114, the magnitude relationship between the target song number (current TNO) at the position where the pickup 3 actually jumps and the target song number (target TNO) at the position where the pickup 3 should be jumped is checked. Further, it is checked whether the jump number (track number) when the pickup 3 is jumped is set to one track.
[0052]
If target TNO <current TNO, or if the number of jumps (number of tracks) is set to 1 track (in the case of “Yes”), the process proceeds to step S116 and “end of song” The flag data FG indicating “locking” is set to “1”, and the process proceeds to the target song number search process in step S120.
[0053]
On the other hand, when the relationship of target TNO ≧ current TNO is satisfied and the number of jumps (number of tracks) is set to a number larger than one track (in the case of “No”), the process proceeds to step S118, After setting the end of song lock release by setting the flag data FG indicating “end locked” to “0”, the process proceeds to “target song number search process” in step S120.
[0054]
For example, when the position where the pickup 3 is jumped from the address Pb of the target song number TNO (n + 1) shown in FIG. 4 is in the area of the inter-song (silence) portion NON of the target song number TNO (n + 1) If target TNO <current TNO and the position where the pickup 3 is jumped from the address Pb of the target song number TNO (n + 1) is within the area of the target song number TNO (n), target TNO ≧ current TNO It becomes.
[0055]
Furthermore, at the time of the first jump, a relatively large number of tracks (300 tracks in this embodiment) are jumped as indicated by (1) in FIG. In jumping, the number of jumps is gradually reduced as indicated by (2) to (6) in the figure, and when jumping to the nearest track end address of the target song number TNO (n), the last jump number is 1 track. (1TRK) is set.
[0056]
The number of jumps (number of tracks) is set in the system controller 11 in advance. The preset maximum number of jumps is level 1, the next largest number of jumps is level 2, and so on. The smaller the data, the smaller the level of data.
[0057]
Therefore, in step S114, if the number of jumps is set to 1TRK and the relationship of target TNO <current TNO, step S116, the number of jumps is set to be greater than 1TRK and the relationship of target TNO ≧ current TNO is satisfied. If so, the process proceeds to step S118.
[0058]
Next, in step S120, the “target song number search process” shown in FIG. 3 is performed.
First, in step S200, a small jump number of one level is selected. However, if 1TRK is already set, 1TRK is selected as it is. For example, as shown by (1) in FIG. 4, when the pickup 3 moves with a large number of jumps, it corresponds to the next level. Set the number of jumps for (2).
[0059]
Next, in step S202, similar to the processing in step S114, the target song number (current TNO) at the position to which the pickup 3 actually jumped and the target song number (target TNO) at the position where the jump should be originally performed are set. Examine the magnitude relationship.
[0060]
If the relationship of target TNO <current TNO is established, the process proceeds to step S204, and the pickup 3 is caused to jump in the inner circumferential direction (the lead-in side direction) of the disk 1 with the selected number of jumps.
[0061]
On the other hand, if the relationship of target TNO ≧ current TNO is established, the process proceeds to step S206, and the pickup 3 is caused to jump in the outer peripheral direction (lead-out direction) of the disk 1 by the selected jump number.
[0062]
Therefore, when the jump of (1) shown in FIG. 4 is performed and the index data included in the P-channel subcode is “1”, the outer peripheral direction shown in (2) is obtained in step S206. A jump to will be performed. Also, if the inter-song (silence) part NON in the target music number TNO (n + 1) is long, the jump destination indicated by (1) is the inter-song (silence) part NON in the target music number TNO (n + 1). In other words, if it is within the area of the current TNO song interval (silence) portion NON, it is determined that the index data included in the P-channel subcode is not “1”, and in step S204 By the processing, a jump in the inner circumferential direction is performed, and the pickup 3 is moved closer to the target song number TNO (n) side.
[0063]
When the “target song number search process” is completed, the process from step S106 shown in FIG.
[0064]
Next, the processing when the flag data FG “in tune end locked” is not set to “1” in step S110 and the process proceeds to step S122 will be described.
[0065]
First, in step S122, it is determined whether or not the pickup 3 is moving to the inner circumference side of the disc 1 based on the value of the index data included in the subcode of the P channel. In the case of “Yes”), after the number of jumps one level lower is selected in step S124, the pickup 3 is jumped in the outer circumferential direction with the selected number of jumps in step S126. Then, the processing from step S106 is repeated again.
[0066]
On the other hand, if the pickup 3 is moving to the inner circumference side of the disk 1 (in the case of “No”) in step S122, the process directly proceeds to step S126, and the pickup 3 is moved to the outer circumference with the number of jumps being selected. Jump in the direction. Then, the processing from step S106 is repeated again.
[0067]
When the processes of steps S106, S108, S114 to S120 and S110, S122 to S126 are repeated in this way, as shown by reference numerals (1) to (6) in FIG. The pickup 3 moves back and forth across the song end address between the track number and the target song number TNO (n) of the jump destination. Gradually approaching the address. Finally, when the number of jumps of the pickup 3 is selected to be 1TRK, the pickup 3 jumps by 1TRK and reaches a position Pc close to the end of the song address, for example, as indicated by reference numeral (7).
[0068]
As described above, when a search is made as to whether or not the song end address has been reached by checking the jump destination position of the pickup 3 while reciprocating the pickup 3, the position Pc relative to the song end address in FIG. 4 is finally obtained. When the pickup 3 reaches this position Pc, the servo circuit 5 starts tracking servo so that the pickup 3 is on-tracked to the track at the track end address, and “track search” is performed. The process ends.
[0069]
When the user further continues the manual search even after the “end of song search” process is completed, a plurality of arrows Y in FIG. 4 are displayed following the above end address of the target song number TNO (n). As shown, the pickup 3 is sequentially moved in the radial direction of the disk 1 so that the fast-forward rewinding is continuously performed.
[0070]
As described above, according to the present embodiment, when manually searching the disc 1 on which a plurality of target song numbers TNO are recorded, the start address of the actual music data recorded in the target song number of the jump source Since the search process is continued by skipping from the (front end address) to the end address (end address) of the target music number of the jump destination, the user can search only the actual music data. This eliminates the conventional problem that it takes a long time to search for the playback start position desired by the user, and that the portion between music (silence) where no music data is actually recorded is also subject to manual search. And excellent operability can be provided.
[0071]
Further, when music data is recorded on a CD-R by a CD-R recording device, a writing error occurs, and a manual search is performed for the disc 1 in which the target song number corresponding to the recording error is included as reproduction prohibited data. In addition, the target music number corresponding to the recording error is excluded from the search target in the same manner as the inter-music (silence) portion NON shown in FIG. For this reason, it is possible to provide a disk drive device with good operability without forcing the user to perform unnecessary operations even in the case of the disk 1 on which reproduction prohibition data is recorded, not only between the music (silence) parts. Can do.
[0072]
Although the disk drive apparatus as a reproducing apparatus has been mainly described, the present invention can also be applied to a disk drive apparatus provided with a recording circuit for recording information on a CD-R.
[0073]
【The invention's effect】
As described above, according to the present invention, information that is designated between music pieces or reproduction prohibition is recorded, and the inner circumference of the information recording / reproducing medium is sandwiched between the information that is designated between music pieces or reproduction inhibition. When manually searching for information recorded on the outer and outer sides from the information on the outer side, information that was specified to be in the middle of a song or forbidden to be played is skipped without being searched. Accordingly, it is possible to provide a disk drive device with excellent operability that does not impose unnecessary operations.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a disk drive device according to an embodiment.
FIG. 2 is a flowchart for explaining the operation of the disk drive device of the present embodiment.
FIG. 3 is a flowchart for further explaining the operation of the disk drive device of the present embodiment;
FIG. 4 is a schematic diagram showing the positional relationship between data recorded on a disk and a pickup in order to explain a marnuelle search function of the disk drive device of the present embodiment.
FIG. 5 is an explanatory diagram for explaining a problem of a conventional playback player.
FIG. 6 is an explanatory diagram for further explaining problems of a conventional playback player.
[Explanation of symbols]
1 ... Disc
2 ... Spindle motor
3 ... Pickup
4. RF amplifier
5. Servo circuit
6. Speed control circuit
7 ... EFM demodulator
8 ... CIRC demodulator
9 ... Output circuit
10: Subcode demodulator
11 ... System controller
12 ... operation part
Pb: Front end address
Pc ... Terminal address
NON ... Between songs (silence)

Claims (2)

A disk drive device having a manual search function,
Manual search instruction means for searching for a desired reproduction start position while partially reproducing information recorded on the information recording / reproducing medium from information on the outer peripheral side toward information on the inner peripheral side ;
Detecting means for detecting the front end position of the information following the end position of the inter-music part included in the information based on the read information of the pickup according to the command of the manual search instruction means ;
Search means for searching for an end position of information recorded on the inner circumference side across the inter-music part;
When the detection means detects the front end position, the search means searches for the end position , and includes a control means for continuing the manual search from the end position ,
The search means performs the jump of the track existing on the information recording / reproducing medium performed by the pickup to the outer peripheral side when the jumped position is within the information existing area recorded on the inner peripheral side. Jumping is repeated while reducing the number of tracks to be jumped so as to jump to the inner circumference side when the jumped position is in the song part, and the number of tracks to jump is the smallest and the song part The disk drive device according to claim 1, wherein when the jump is made to an existing area of information recorded on the inner circumference side, the jumped position is set as the end position . A disk drive device having a manual search function,
Manual search instruction means for searching for a desired reproduction start position while partially reproducing information recorded on the information recording / reproducing medium from information on the outer peripheral side toward information on the inner peripheral side ;
Detecting means for detecting the front end position of information following the end position of the information for which reproduction prohibition is specified included in the information based on the read information of the pickup according to the command of the manual search instruction means ;
Search means for searching for the end position of the information recorded on the inner circumference side across the information for which the reproduction prohibition is specified;
When the detection means detects the front end position, the search means searches for the end position , and includes a control means for continuing manual search from the end position ,
The search means performs the jump of the track existing on the information recording / reproducing medium performed by the pickup to the outer peripheral side when the jumped position is within the information existing area recorded on the inner peripheral side. If the jumping position is information for which the reproduction prohibition has been specified, it is repeated while reducing the number of tracks to be jumped so that the jump to the inner circumference side is performed, and the number of tracks to be jumped In addition, when jumping from the information for which reproduction is prohibited to the information existing area recorded on the inner circumference side, the jumped position is set as the end position .

Images